a:12:{i:0;s:6:"msg_id";i:1;s:9:"worker_id";i:2;s:7:"site_id";i:3;s:8:"msg_type";i:4;s:8:"order_id";i:5;s:7:"content";i:6;s:11:"create_time";i:7;s:6:"sender";i:8;s:7:"receipt";i:9;s:12:"receipt_time";s:3:"_pk";s:6:"msg_id";s:5:"_type";a:10:{s:6:"msg_id";s:16:"int(11) unsigned";s:9:"worker_id";s:16:"int(10) unsigned";s:7:"site_id";s:15:"int(8) unsigned";s:8:"msg_type";s:19:"tinyint(2) unsigned";s:8:"order_id";s:16:"int(11) unsigned";s:7:"content";s:12:"varchar(255)";s:11:"create_time";s:16:"int(10) unsigned";s:6:"sender";s:16:"int(10) unsigned";s:7:"receipt";s:19:"tinyint(2) unsigned";s:12:"receipt_time";s:16:"int(10) unsigned";}}